Electric switch



March 27, 1934n W. R. mums $529l555 ELECTRIC SWITCH Filed Dec. 24, 1932 ak I , Irwewgor:

William R. YOLUEQ, bg

Hi8 loweg.

Patented Mar. 27, 1934 My invention relates the slow break type.

The object of my invention proved electric switch y ELECTRIC SWI'ICH William R. Young, Fairfield, Conn., assignor to General Electric New York Company, a corporation of Application December 24, 1932, Serial No. 648,768 2 Claims. (Cl. 200-168) to an electric switch of for opening circuits of i low current density which is simple in construction and of low cost of manufacture.

What I consider to be novel and my invention will be better understood by reference to the following specification and appended claims when considered in connection with the accompanying adapted to slide drawing.

In the drawing,

Fig. 1 is a side View in section of the switch; Fig.`2 is an end view in section, and Fig. 3 is an exploded view of the switch with certain of the parts s hown in section.

Referring to the drawing in which like nu.

merals are used to indicatethe same parts in diierent gures, 10 indicates a base o insulating material having a central chamber 1l and longitudinal slots 12 extending from the top to near the bottom of the base. 13 are provided in the slots. adapted to seat in the Stationary contacts slots provided in base 10.

Transverse depressions base at the end of the 14 are provided and Contacts 14 are provided with extensions 15 which engage the walls-of the central chamber 11 and extensions 16 which seat in the transverse depressions 13. A bridging vided in the form of a washer of copper or good conducting material.

contact 17 isproother Contact 17 is secured to.a spindle 18 between insulating washers 19 v and 20. Contact 17 and washers 19 and 20 are secured on a reduced portion of spindle 18 by the turned over end 21 of the spindle. Spindle 18 extends through a metal plate 22 and a plate 23 of insulating material. A spiral spring 24 surrounds spindle 18 and a shoulder of anv and abuts plate 22 at one end enlarged head 25 of the spindle at the other end. The head 25 of the spindle 18 is provided with a transverse slot 26 which erating handle 27 is pr in the extends at an angle to the face.

An opovided with a projection 'slot 26 of spindle 18. A

cover 28 is provided, integrally connectedl with. a threaded nozzle 29. Operating handle 27 is pivoted on 29. Cover 28 and to the base 10 by means a pin 30 which is secured in the nozzle plates 22 and 23 are secured of hollow rivets 31. The

contacts 14 are held in the slots 12 by engagement with plate 23 of insulating material. With of s lot 26 and the contact 17 in the position indicated bridges stationary contacts 14. When the operating handle 27 is moved to its other pos ition the extension rides is to provide an imupon the inclined slot 26 and moves contact 17 out of engagement with contacts 14. Spring 24 holds spindle 18 into engagement with the operating handle 27. Nuts 32 are provided to secure the switch in position in a device to which it may be connected. The assembly of the switch is accomplished by first placing the spring 24 on spindle 18 and inserting the spindle through the opening provided in plates 22 and 23. Contact 17 and insulators 19 and 20 are then secured 65 to the end of the spindle. Contacts 14 may then be placed between the contact 17 and plate 23, one contact being shown in this position in Fig.

3. Plates 22 and 23 of the spindle 18 and contacts 14 are then placed in position over the base 70 10 with the contacts 14 seated in the slots 12. The operating handle is placed in nozzle 29 and the 'cover secured thereto.; The assembly is placed in position over the plates with the ex tension of operating handle 27 seating in the slot 26 of spindle 18 and the parts are then secured rigidly in position by means 0I rivets 31. From the foregoing it may be seen that a switch of simple construction is provided which is easy su to assemble and of low cost of manufacture.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. In combination, a base of insulating material, stationary contacts seated in slots in said base and having projections engaging recesses inthe base to prevent lateral movement of the coiltacts, a plate of insulating material secured to said base adapted to engage the stationary contacts to secure them in position in the base, a metal plate secured in position to the base to reenforce said plate of insulating material, a spindle extending through said plate of insulating material into a central chamber of said base,

a contact secured to the end of said spindle in a position to engage the stationary contacts, a spiral spring surrounding said spindle and y abutting said metal plate and a shoulder on said spindle, said spring biasing the contacts secured to said spindle into engagement with the stationary contacts securedin said base, a cover secured tosaid base and an operating handle pivoted in said cover and having an extension engaging an angular slot in thehead of said spindle to move the movable contact out of engagement with the stationary contacts when moved from one position to another and'to permit the spring to return the movable contact into engagement with the stationary contacts when moved to another position.

plate into the central chamber of said' base, a contact secured to the inner end of said spindle, a. spring abutting the metal plate and a shoulder on the spindle, a cover secured to said base, an operating handle pivoted in s aid cover and adapted to engage said spindle to move the spindle by engagement with an inclined slot in the head of the spindle.

WILLIAM R. YOUNG. 

